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Daily Practice · GCSE Computer Science

August 1985 5-a-day

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August 1985

31 sheets · 155 questions · GCSE

August 1985 compilationAll answers

Every sheet in August 1985

The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.

  1. 1st August 1985State the term used for realistic data that a program would be expected to handle during normal use.
  2. 2nd August 1985State what a foreign key is used for.
  3. 3rd August 1985State the difference between lossy and lossless compression.
  4. 4th August 1985State the condition that must be met before a binary search can be used on an array.
  5. 5th August 1985A logic circuit has inputs C and D. C feeds into a NOT gate; the output of the NOT gate and D feed into an OR gate, giving output Y. Write the Boolean expression for Y and state its value when C = 1 and D = 0.
  6. 6th August 1985A pseudocode algorithm is: count <- 0, x <- 10, WHILE x > 0, count <- count + 1, x <- x - 3, ENDWHILE, OUTPUT count. Complete a trace table for x and count, laid out as x | count, then state the value output.
  7. 7th August 1985Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  8. 8th August 1985Give one advantage and one disadvantage of using a compiler.
  9. 9th August 1985Convert the denary number 45 to hexadecimal.
  10. 10th August 1985What does the acronym CPU stand for?
  11. 11th August 1985State what the term malware means.
  12. 12th August 1985Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
  13. 13th August 1985An uncompressed file is 6000 KB. After lossless compression it is 1500 KB. Calculate the compression ratio in the form n:1 (original size : compressed size).
  14. 14th August 1985Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  15. 15th August 1985Which piece of UK legislation controls how organisations must store and use people's personal data?
  16. 16th August 1985Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
  17. 17th August 1985State the value returned by LENGTH(word) if word stores the string 'Computer'.
  18. 18th August 1985Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  19. 19th August 1985A user reads the same email on a phone and a tablet, and deleting it on one deletes it on the other. Which protocol is in use and why?
  20. 20th August 1985A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  21. 21st August 1985A table called books has fields bookId, title, authorId and copiesAvailable. Write an SQL statement that selects the title of every book with more than 2 copies available.
  22. 22nd August 1985State one function carried out by the operating system of a computer.
  23. 23rd August 1985In computational thinking, what is meant by the term 'decomposition'?
  24. 24th August 1985Given A = 1 and B = 1, state the value of A AND B.
  25. 25th August 1985State how many different values can be represented using 5 bits, and explain your reasoning.
  26. 26th August 1985Define a peer-to-peer network.
  27. 27th August 1985Name the translator used for assembly language and describe how it differs from a compiler.
  28. 28th August 1985Convert the denary number 5 to a 4-bit binary number.
  29. 29th August 1985A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  30. 30th August 1985A simple cipher shifts every letter 2 places forward in the alphabet, wrapping around so Y becomes A and Z becomes B. Encrypt the plaintext CAT using this cipher.
  31. 31st August 1985Explain what happens if a program tries to read index 5 of an array declared with 5 elements.